Advertisements
Advertisements
Question
Find two numbers whose sum is 27 and product is 182.
Solution
Sum of numbers = 27
Product of numbers = 182
Let first number = x
Second number = x + 1
Product of both the numbers = 182
x(27 - x) = 182
27x - x2 = 182
-x2 + 27x - 182 = 0
x2 - 27x + 182 = 0
x2 - 14x - 13x + 182 = 0
x(x - 14) - 13(x - 14) = 0
(x - 14)(x - 13) = 0
x - 14 = 0 and x - 13 = 0
x = 14 and x = 13
First number = x = 13
Second number = x + 1 = 13 + 1 = 14
APPEARS IN
RELATED QUESTIONS
Solve the following quadratic equations by factorization:
4x2 + 4bx - (a2 - b2) = 0
The time taken by a person to cover 150 km was 2.5 hrs more than the time taken in the return journey. If he returned at a speed of 10 km/hr more than the speed of going, what was the speed per hour in each direction?
If two pipes function simultaneously, a reservoir will be filled in 12 hours. One pipe fills the reservoir 10 hours faster than the other. How many hours will the second pipe take to fill the reservoir?
Solve each of the following equations by factorization:
`X^2 – 10x – 24 = 0 `
Find the tow consecutive positive odd integer whose product s 483.
Determine whether the values given against the quadratic equation are the roots of the equation.
2m2 – 5m = 0, m = 2, `5/2`
Solve the following quadratic equation by
factorisation.
5m2 = 22m + 15
Solve the following quadratic equation by factorisation.
\[25 m^2 = 9\]
Find the value of p for which the quadratic equation
\[\left( p + 1 \right) x^2 - 6(p + 1)x + 3(p + 9) = 0, p \neq - 1\] has equal roots. Hence, find the roots of the equation.
Disclaimer: There is a misprinting in the given question. In the question 'q' is printed instead of 9.
Write the set of value of k for which the quadratic equations has 2x2 + kx − 8 = 0 has real roots.
If p and q are the roots of the equation x2 − px + q = 0, then
The values of k for which the quadratic equation \[16 x^2 + 4kx + 9 = 0\] has real and equal roots are
The sum of the square of 2 positive integers is 208. If the square of larger number is 18 times the smaller number, find the numbers.
A two digit number is such that the product of its digit is 14. When 45 is added to the number, then the digit interchange their places. Find the number.
One fourth of a herd of camels was seen in the forest. Twice the square root of the herd had gone to mountains and the remaining 15 camels were seen on the bank of a river. Find the total number of camels.
Solve the following by reducing them to quadratic equations:
`sqrt(x/(1 -x)) + sqrt((1 - x)/x) = (13)/(6)`.
Solve the following equation by factorization
3(y2 – 6) = y(y + 7) – 3
Solve the following equation by factorization
a2x2 + (a2+ b2)x + b2 = 0, a ≠ 0
Find three consecutive odd integers, the sum of whose squares is 83.
(x – 3) (x + 5) = 0 gives x equal to ______.